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| Recommended dietary allowances for magnesium (mg) | Tolerable upper intake levels for supplemental magnesium (mg) | |||
|---|---|---|---|---|
| Age (year) | Male | Female | Male | Female |
| 19-30 | 400 | 310 | 350 | 350 |
| 31-50 | 420 | 320 | 350 | 350 |
| 51 or more | 420 | 320 | 350 | 350 |
Note: Data are from Office of Dietary Supplements, National Institutes of Health.65
